html {
  font-size: 20px;
}
* {
  margin: 0;
  padding: 0;
}
ul,
li {
  list-style: none outside none;
}
html,
body,
#app {
  width: 100%;
  height: 100%;
  overflow: auto;
  position: relative;
}
body {
  font-family: 'PingFang SC', 'Helvetica Neue', Helvetica, 'microsoft yahei', arial, STHeiTi, sans-serif;
  background-color: #f9f9f9;
}
a {
  text-decoration: none;
}
.page-bg {
  width: 100%;
  height: 100%;
  position: relative;
  overflow: hidden;
}
